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Thank you for posting your question here at brainly. Below are the choice that can be found elsewher:

A) 0.0121 
B) 0.0534 
C) 18.7 
D) 82.517

The number of moles of the gas are in the container if Xenon tetrafluoride gas is placed in a 3 liter container at 80°c the pressure of the gas is found to be 0.117 atm is 0.0121. The answer is A. 

Answer:

0.0121260 moles of the gas are in the container.

Explanation:

Pressure of the gas = 0.117 atm

Temperature of the gas = 80 C = 353 K

Volume of the gas = 3 l

Number of moles of xenon gas = n

Using ideal gas equation;

[tex]PV=nRT[/tex]

[tex]n=\frac{PV}{RT}=\frac{0.117 atm\times 3 L}{0.0820 atm L/mol k\times 353 K}=0.0121260 mol[/tex]

0.0121260 moles of the gas are in the container.